/*
* Copyright 2010 JBoss, a divison Red Hat, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.errai.bus.server.service.bootstrap;
import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import org.jboss.errai.bus.client.api.Message;
import org.jboss.errai.bus.client.api.ResourceProvider;
import org.jboss.errai.bus.client.api.base.JSONMessage;
import org.jboss.errai.bus.client.api.base.MessageBuilder;
import org.jboss.errai.bus.client.api.base.MessageModelWrapper;
import org.jboss.errai.bus.client.framework.*;
import org.jboss.errai.bus.server.ErraiBootstrapFailure;
import org.jboss.errai.bus.server.HttpSessionProvider;
import org.jboss.errai.bus.server.SimpleDispatcher;
import org.jboss.errai.bus.server.api.ServerMessageBus;
import org.jboss.errai.bus.server.api.SessionProvider;
import org.jboss.errai.bus.server.io.JSONMessageServer;
import org.jboss.errai.bus.server.security.auth.AuthenticationAdapter;
import org.jboss.errai.bus.server.service.ErraiService;
import org.jboss.errai.bus.server.service.ErraiServiceConfigurator;
import org.jboss.errai.bus.server.service.ErraiServiceConfiguratorImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static com.google.inject.Guice.createInjector;
/**
* Load the default components configured through ErraiService.properties.
*
* @author: Heiko Braun <hbraun@redhat.com>
* @date: May 3, 2010
*/
class DefaultComponents implements BootstrapExecution {
private Logger log = LoggerFactory.getLogger(DefaultComponents.class);
public void execute(final BootstrapContext context) {
final ErraiServiceConfiguratorImpl config = (ErraiServiceConfiguratorImpl) context.getConfig();
final NoopModelAdapter adapter = new NoopModelAdapter();
final ResourceProvider<ModelAdapter> modelAdapterProvider = new ResourceProvider<ModelAdapter>() {
public ModelAdapter get() {
return adapter;
}
};
/*** ModelAdapter ***/
config.getExtensionBindings().put(ModelAdapter.class, modelAdapterProvider);
final MessageProvider modelAdapterProxy = new MessageProvider()
{
final MessageProvider delegate = JSONMessageServer.PROVIDER;
public Message get() {
return new MessageModelWrapper(delegate.get(),
(ModelAdapter) config.getExtensionBindings().get(ModelAdapter.class).get()
);
}
};
MessageBuilder.setMessageProvider(modelAdapterProxy);
/*** Authentication Adapter ***/
if (config.hasProperty("errai.authentication_adapter")) {
try {
final Class<? extends AuthenticationAdapter> authAdapterClass = Class.forName(config.getProperty("errai.authentication_adapter"))
.asSubclass(AuthenticationAdapter.class);
log.info("authentication adapter configured: " + authAdapterClass.getName());
final Runnable create = new Runnable() {
public void run() {
final AuthenticationAdapter authAdapterInst = Guice.createInjector(new AbstractModule() {
@Override
protected void configure() {
bind(AuthenticationAdapter.class).to(authAdapterClass);
bind(ErraiServiceConfigurator.class).toInstance(context.getConfig());
bind(MessageBus.class).toInstance(context.getBus());
bind(ServerMessageBus.class).toInstance(context.getBus());
}
}).getInstance(AuthenticationAdapter.class);
config.getExtensionBindings().put(AuthenticationAdapter.class, new ResourceProvider() {
public Object get() {
return authAdapterInst;
}
});
}
};
try {
create.run();
}
catch (Throwable e) {
log.info("authentication adapter " + authAdapterClass.getName() + " cannot be bound yet, deferring ...");
context.defer(create);
}
}
catch (ErraiBootstrapFailure e) {
throw e;
}
catch (Exception e) {
throw new ErraiBootstrapFailure("cannot configure authentication adapter", e);
}
}
/*** Dispatcher ***/
RequestDispatcher dispatcher = createInjector(new AbstractModule() {
@Override
protected void configure() {
Class<? extends RequestDispatcher> dispatcherImplementation = SimpleDispatcher.class;
if (config.hasProperty(ErraiServiceConfigurator.ERRAI_DISPATCHER_IMPLEMENTATION)) {
try {
dispatcherImplementation = Class.forName(config.getProperty(ErraiServiceConfigurator.ERRAI_DISPATCHER_IMPLEMENTATION))
.asSubclass(RequestDispatcher.class);
}
catch (Exception e) {
throw new ErraiBootstrapFailure("could not load request dispatcher implementation class", e);
}
}
log.info("using dispatcher implementation: " + dispatcherImplementation.getName());
bind(RequestDispatcher.class).to(dispatcherImplementation);
bind(ErraiService.class).toInstance(context.getService());
bind(MessageBus.class).toInstance(context.getBus());
bind(ErraiServiceConfigurator.class).toInstance(config);
}
}).getInstance(RequestDispatcher.class);
context.getService().setDispatcher(dispatcher);
/*** Session Provider ***/
SessionProvider sessionProvider = createInjector(new AbstractModule() {
@Override
protected void configure() {
Class<? extends SessionProvider> sessionProviderImplementation = HttpSessionProvider.class;
if (config.hasProperty(ErraiServiceConfigurator.ERRAI_SESSION_PROVIDER_IMPLEMENTATION)) {
try {
sessionProviderImplementation = Class.forName(config.getProperty(ErraiServiceConfigurator.ERRAI_SESSION_PROVIDER_IMPLEMENTATION))
.asSubclass(SessionProvider.class);
}
catch (Exception e) {
throw new ErraiBootstrapFailure("could not load session provider implementation class", e);
}
}
log.info("using session provider implementation: " + sessionProviderImplementation.getName());
bind(SessionProvider.class).to(sessionProviderImplementation);
bind(ErraiService.class).toInstance(context.getService());
bind(MessageBus.class).toInstance(context.getBus());
bind(ErraiServiceConfigurator.class).toInstance(config);
}
}).getInstance(SessionProvider.class);
context.getService().setSessionProvider(sessionProvider);
}
}